vi 
Table of Contents. 
PAGE. 
Variations in form and size of Cyclops brevispinosus Her¬ 
rick and Cyclops Americanus Marsh, 
tHarriet Lehmann , 279 
Action of metallic magnesium upon aqueous solutions, 
Louis Kohlenberg , 299 
Fluoride of gold, , Victor Lenher , 312 
Action upon metals of solutions of hydrochloric acid in 
various solvents, . [Harrison Eastman Patten , 316 
